sqlite insert if not exists else update

相關問題 & 資訊整理

sqlite insert if not exists else update

If you have a table called memos that has two columns id and text you should be able to do like this: INSERT INTO memos(id,text) SELECT 5, 'text to insert' ... ,If you have no primary key, You can insert if not exist, then do an update. The table must contain at least one entry before using this. "INSERT OR REPLACE" without the additional trickery in that answer will reset any fields you don't speci, Use INSERT OR REPLACE which does exactly what you want : insert a new row when the name does not exists or update otherwise.,I think this has been asked here before for sqlite: INSERT IF NOT EXISTS ELSE UPDATE? seems like they have a syntax for that: INSERT OR REPLACE INTO ... , Note that any field not in the insert list will be set to NULL if the row already exists in the table. This is why there's a subselect for the ID column: ...,, If you are trying to insert/update a player whose ID already exists, the ... be used (or at least I did not manage it) to perform one UPDATE query if ..., Use INSERT OR REPLACE which does exactly what you want : insert a new row when the name does not exists or update otherwise.

相關軟體 SQLite 資訊

SQLite
SQLite 是一個實現自包含,無服務器,零配置,事務 SQL 數據庫引擎的進程內庫。 SQLite 的代碼是在公共領域,因此可以用於任何目的,商業或私人。 SQLite 是世界上應用最廣泛的數據庫,比我們可以計數的應用程序還要多,其中包括幾個備受矚目的項目。選擇版本:SQLite 3.21.0(32 位)SQLite 3.20.1(64 位) SQLite 軟體介紹

sqlite insert if not exists else update 相關參考資料
"Insert if not exists" statement in SQLite - Stack Overflow

If you have a table called memos that has two columns id and text you should be able to do like this: INSERT INTO memos(id,text) SELECT 5, 'text to insert' ...

https://stackoverflow.com

INSERT IF NOT EXISTS ELSE UPDATE? - Stack Overflow

If you have no primary key, You can insert if not exist, then do an update. The table must contain at least one entry before using this. "INSERT OR REPLACE" without the additional trickery i...

https://stackoverflow.com

sql - Sqlite: Insert if not exist, Update if exist - Stack Overflow

Use INSERT OR REPLACE which does exactly what you want : insert a new row when the name does not exists or update otherwise.

https://stackoverflow.com

SQL: How to update or insert if doesn't exist? - Stack Overflow

I think this has been asked here before for sqlite: INSERT IF NOT EXISTS ELSE UPDATE? seems like they have a syntax for that: INSERT OR REPLACE INTO ...

https://stackoverflow.com

sqlite - INSERT IF NOT EXISTS ELSE UPDATE? - Stack Overflow

Note that any field not in the insert list will be set to NULL if the row already exists in the table. This is why there's a subselect for the ID column: ...

https://stackoverflow.com

SQLite REPLACE: Insert or Replace The Existing Row - SQLite Tutorial

http://www.sqlitetutorial.net

SQLite UPSERT UPDATE OR INSERT - Stack Overflow

If you are trying to insert/update a player whose ID already exists, the ... be used (or at least I did not manage it) to perform one UPDATE query if ...

https://stackoverflow.com

Sqlite: Insert if not exist, Update if exist - Stack Overflow

Use INSERT OR REPLACE which does exactly what you want : insert a new row when the name does not exists or update otherwise.

https://stackoverflow.com